Recessed luminaires, type Gb34

The Gb 34 series of recessed LED luminaires can be used for recess or surface mounting in hazardous gas atmospheres in Zones 1 and 2. The LED recessed luminaires are suited for use as ceiling or wall-mounting luminaires.

Approvals BVS 20 ATEX E 082 /IECEx BVS 20.0066
Type of protection Ex db IIC T6 Gb
Voltage 100 – 265 V AC or 12 – 50 V DC
Ambient temperature –20 °C to 50 °C (standard)

The Gb 34 recessed LED luminaires are available in sheet steel with a white paint finish or in stainless steel. They are suited for clean room applications in pharmaceutical and chemical installations or, for example, as lighting in lift cabins.

The metal enclosures are fitted with a 4 mm thick glass panel that is glued into the enclosure. If required, the recessed luminaire can also be used as an emergency sign luminaire.

Each recessed luminaire flameproof Gb34 are fitted with 2 LED tubes with a diameter of 34 mm. The connection lead is potted, so that the requirement for flameproof equipment with regard to the minimum length of the connection cable for direct entry does not apply. The ballasts are built directly into the LED tubes.

The Gb 34 recessed LED luminaires have a standard width of 315 mm. The standard lengths are 815 mm or 1200 mm, whereby other lengths according to customer requirements are possible for small series. The recessed luminaires have fixing elements on both sides for mounting them in the respective openings. The electrical connection is made via the terminal box on the top. The degree of protection of the luminaires is IP 66.

«Our well-established principles will not change»

As of January 1, 2023, there will be a change in the senior operational management of the thuba AG: after 52 years in office, the owner, Peter Thurnherr, is handing over the company management to the long-time employees Jorge Moedas (CEO) and Pascal Bürgi (CFO). How will the company be set up in the future? What changes are planned? An extensive interview.